I am using Windows 10 Pro with Affinity Photo 1.7.0.333 Beta. I was in the photo persona and clicked on Quick Mask. Using the paintbrush with the color white selected I painted out the area I wanted to be selected. I then clicked on the adjustments icon and clicked on Shadow/Highlights and Affinity Photo crashed! It closed completely with no chance to save your work. I tried this several times clicking on different adjustments and always with the same results, it crashes.